Added better_errors for more informative error pages in dev env

Gemfile

@@ -88,4 +88,8 @@ group :development do
   # Speed up commands on slow machines / big apps [https://github.com/rails/spring]
   # gem "spring"
   gem 'ruby-prof'
+
+  # Better Errors replaces the standard Rails error page with a much better and more useful error page.
+  gem 'better_errors'
+  gem 'binding_of_caller'
 end

config/environments/development.rb

@@ -5,6 +5,9 @@
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
+  # For better_errors
+  BetterErrors::Middleware.allow_ip! '0.0.0.0/0'
+
   # In the development environment your application's code is reloaded any time
   # it changes. This slows down response time but is perfect for development
   # since you don't have to restart the web server when you make code changes.